Improvement in post-hole augers



H. P. HASKIN. POST-HOLE AUGERS.

No. 195,446. Patented Sept.25,1877.

UNITED STATES PATENT OFFIoE.

HENRY P. HASKIN, OF BELOIT, WISCONSIN, ASSIGNOR OF ONE-HALF HIS RIGHT TORICHARD TATTERSHALL, OF SAME PLACE.

IMPROVEMENT IN POST-HOLE AUGERS.

Specification forming part of Letters Patent No. l95,446, datedSeptember 25, 1877; application filed July 23, 1877.

To all whom it may concern:

Be it known that I, HENRY P. HASKIN, of the city of Beloit, Rock county,in the State of Wisconsin, have invented certain new and usefulImprovements in Augers for Boring Post-Holes; and I hereby declare thefollowing description and accompanying drawings are sufficient to enableany person skilled in the art or science to which it most nearlyappertains to make and use my said invention or improvements withoutfurther invention or experiment.

The nature of my invention and improvements consists in the constructionof a posthole auger upon a plan which is believed to be more simple,effective, and economical in cost of production than any heretofore inpublic use, and is made out of a single circular disk of suitable metal,having a suitable lip or bit, and vertical standard with transversehandle at the top, as shown in the accompanying drawings, andhereinafter fully described, in which said drawing- Figure 1 is a viewof the auger without a handle, and Fig. 2 is a top view of theboringdisk.

Reference being had to said drawings, similar letters indicatecorresponding parts.

Letter A represents the vertical standard or shank of the auger; B, thecircular metal disk, provided with the circular-shaped boring lip or bitL and throat S.

The lower end of the auger-shank is suitably pointed, and at properdistance above the point has a screw-thread, so that it may be firmlyscrewed into the orifice h in the disk B, which also has a suitablescrew-thread cut therein for receiving the shank A, all as shown.

The disk B is also made thicker around the orifice h, in the form of aslight hub, so as to give necessary strength to the central part of theboring-plate.

The circular-shaped lip L is depressed to a proper boring-angle, asshown at L, Fig. 1, and the throat S is for the purpose of enabling thelip or bit L to out very nearly to the actual center of the plate, theauger'shank being set out of the true center of the plate or disk in aline from the center of the inner end of the throat S, so that the lip Lwill cut a little outside of the true diameter of the auger-plate, andfar enough to make it work freely in boring and lifting the earth out ofthe hole, which, by this means, will be a little larger than thediameter of the boring-plate.

D is a socket for an ordinary handle for operating the auger.

The plate B may be made of cast metal or stamped out of sheet iron orsteel, as may be found most available; and my invention consists chieflyin making the entire auger-plate B in one piece of flat metal whenconstructed with the circular-shaped lip or bit L, the inner edge ofwhich, by reason of the rotary action of the auger will have a circularor shear cut, reaching nearly to the center of the plate, which,in apost anger of this class, is believed to be of the utmost importance, asit will cut away all fibrous obstructions and at the same time will holdup all the earth it has bored through, which the operator may thenremove from the hole by a single lift, which also is greatly facilitatedby the auger being made to bore a hole a trifle larger than its owndiameter, as herein shown and described.

Having thus fully described the construction, arrangement, and manner ofoperating my improved post-hole auger, what I claim as new, and desireto secure by Letters Patent, 1s-

The combination of the auger shank or stem A and boring-plate B,eccentrically pivoted and fixed to and upon the auger-shank A, andprovided with a circular lip or hit, L, formed thereon, and having thethroat S, the whole being constructed and arranged substantially as andfor the purpose shown and described.

HENRY P. HASKIN.

Attest:

G. O. TATTERSHALL, J. E. GOODALL.

